Propane backfire? - Ford Truck Enthusiasts Forums



Propane backfire?

Reply
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 05-31-2007, 12:21 PM
partsman01's Avatar
partsman01 partsman01 is offline
Senior User
Thread Starter
 
Join Date: Apr 2005
Location: Port Coquitlam, BC Canada
Posts: 213
partsman01 is starting off with a positive reputation.
Question Propane backfire?

So, did not see this topic anywhere, my 1977 F-250 400 CI was done by a fellow that used to do propane conversions, it is a dual fuel system.
No brain box or what have you, so he apparently set it up I think to run best on propane, as it is great on propane and will break the wheels loose easier than on gas, gasoline is not as smooth running.
So I imagine it is set up as a compormise system, anyway I have had it where going up hills it has done what I call backfiring, so I was told to take the rotor under the distributor cap and cut one side off, as it is what I call a hammerhead shape and that would stop it, as I guess the thought is that the spark is jumping quicker or something, so I think they said to do it on the following edge.
Anybody ever heard of this?
Reply With Quote
  #2  
Old 06-02-2007, 06:15 PM
cookie88's Avatar
cookie88 cookie88 is offline
Moderator
 
Join Date: May 2001
Location: Cabot, Arkansas
Posts: 13,568
cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.
I'm not sure I understand. Is the assertation here that making the rotor lighter will make it spin faster? I don't think that's going to happen since the rotor is driven off the cam.

If you want your spark happening earlier maybe you should advance the timing a little bit.

Last edited by cookie88; 06-02-2007 at 06:17 PM.
Reply With Quote
  #3  
Old 06-05-2007, 11:24 AM
partsman01's Avatar
partsman01 partsman01 is offline
Senior User
Thread Starter
 
Join Date: Apr 2005
Location: Port Coquitlam, BC Canada
Posts: 213
partsman01 is starting off with a positive reputation.
I assume he was saying that it cuts down on the spark jumping too soon, or something like that.
Seems it would focus the spark at the correct point for sparking.
Reply With Quote
  #4  
Old 06-09-2007, 11:40 PM
cookie88's Avatar
cookie88 cookie88 is offline
Moderator
 
Join Date: May 2001
Location: Cabot, Arkansas
Posts: 13,568
cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.cookie88 has a spectacular reputation.
So did you try it? Did it work?
Reply With Quote
  #5  
Old 06-10-2007, 12:54 AM
partsman01's Avatar
partsman01 partsman01 is offline
Senior User
Thread Starter
 
Join Date: Apr 2005
Location: Port Coquitlam, BC Canada
Posts: 213
partsman01 is starting off with a positive reputation.
Have not tried it yet, thought I would ask here first.
Have only city drove the truck so far now, have not been out on holidays with it yet.
May not get to use it for the usual trips and that is the only time I noticed the problem, due I guess to the heat and the heavy load.
Reply With Quote
  #6  
Old 06-15-2007, 02:57 PM
gasman6674's Avatar
gasman6674 gasman6674 is online now
Posting Guru
 
Join Date: Apr 2002
Location: Greenwood In. USA
Posts: 1,259
gasman6674 is gaining momentum as a positive member of FTE.
Back fire on LP is usally caused by a lean mixture, Look for an air leak cracked hose etc.
You might be able to richen it up under load but I will need to know what kind of system you have.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Propane Conversion on my Edge - 6 month report PaulsEdge Alternative Fuels, Hybrids & Mileage 5 05-04-2014 09:57 AM
1977 propane system removal f100drew 1973 - 1979 F-100 & Larger F-Series Trucks 16 03-18-2012 10:23 AM
propane conversion. TaborCT 1967 - 1972 F-100 & Larger F-Series Trucks 15 09-03-2011 08:04 AM
Propane conversion- 95 F250 superduty4x4 1987 - 1996 F150 & Larger F-Series Trucks 3 04-19-2006 08:36 PM
Propane Engine backfiring. Need help SAUKA Fuel Injection, Carburetion & Fuel System 12 01-15-2004 08:42 AM


Go Back   Ford Truck Enthusiasts Forums >

Tags
01, 351, backfire, backfires, backfiring, duel, f250, f700, ford, fuel, gas, lp, propane, stopped, triton, truck

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


All times are GMT -5. The time now is 04:25 PM.


This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.